A day will come in which men will look upon an animal's murder the same way they look today upon a man's murder.

The smallest feline is a masterpiece.

We know more about the movement of celestial bodies than about the soil underfoot.

The deeper the feeling, the greater the pain

If we make mistakes in our first compositions and do not know them, we may not amend them.

The eye transmits its own image through the air to all the objects which face it, and also receives them on its own surface, whence the "sensus communis" takes them and considers them.

A well-spent day brings happy sleep.